FIELD: testing.
SUBSTANCE: invention relates to technical diagnostics of gas turbine power units. The purpose of the invention is to increase the accuracy, reliability and promptness of diagnosing gas turbine engines (GTE) in transient and steady-state modes from idle run to rated power mode. In practice, the proposed method can be used to monitor the technical condition of GTEs of sea and river transport, ships and vessels of the Navy, and to diagnose engines used in stationary power engineering. The substance of the invention consists in identifying certain characteristics of the object, which remain unchanged during normal operation of the object and change with occurrence of defects. Said characteristics are then used as direct or indirect diagnostic indicators. In the proposed method, the hodographs of serviceable and operable GTE (reference hodograph) and the hodographs of the controlled object (controlled trajectory) undergo comparative analysis. The source data for determining the type of hodographs in space are thermogasdynamic parameters collected in the idle run and warm-up modes of the engine. The discrepancy between the controlled trajectory of damage and the reference hodograph indicates a defect. The presence of a broken line, the sections whereof are equidistant to the rated trajectories, indicates the total accumulation of single instances of damage. In other words, the type of the studied trajectory of damage can be used to draw a conclusion about the history and nature of the formation of single or multiple defects. A three-dimensional space of parametric invariants is used as the hodograph mapping range.
EFFECT: ensured monitoring of the technical condition of GTEs.
6 cl, 20 dwg
